– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 4 am Sat 29 Aug Local TimeUpdates in: hr min sUpdate imminent
Issued: 4 am Sat 29 Aug Local Time
Updates in:
Update imminent hr min s
Issued: 4 am Sat 29 Aug Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummarySome drizzle, heaviest during Sat morning. Warm (max 22°C on Mon afternoon, min 10°C on Sat night). Wind will be generally light. | Days 4–6 Weather SummaryHeavy rain (total 33mm), heaviest during Wed night. Warm (max 20°C on Tue afternoon, min 9°C on Wed night). Wind will be generally light. | |||||||||||||||||
Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  |  | | |  | |  |  |  |  | | |  | | | | |
rain shwrs | rain shwrs | some clouds | cloudy | rain shwrs | some clouds | clear | clear | clear | some clouds | light rain | light rain | light rain | light rain | heavy rain | light rain | light rain | light rain | |
Cloud base (m) | 850 | 1750 | 2200 | 1600 | 1550 | 6200 | 9050 | 9050 | 4450 | 4950 | 2000 | 700 | 650 | 550 | 550 | 600 | 750 | 1800 |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | 1 | 0.7 | — | — | 0.2 | — | — | — | — | — | 0.1 | 0.4 | 3 | 4 | 22 | 3 | 1.3 | 0.1 |
max °C | 11 | 15 | 12 | 11 | 14 | 12 | 18 | 22 | 17 | 18 | 20 | 16 | 13 | 12 | 12 | 10 | 12 | 10 |
min °C | 11 | 14 | 10 | 11 | 13 | 11 | 14 | 21 | 15 | 16 | 19 | 13 | 12 | 12 | 9 | 9 | 11 | 10 |
chill °C | 11 | 14 | 10 | 11 | 13 | 11 | 14 | 21 | 15 | 16 | 19 | 12 | 11 | 11 | 9 | 9 | 11 | 10 |
Freezing level m | 2200 | 2500 | 2650 | 3000 | 3050 | 3350 | 3500 | 3600 | 3600 | 3450 | 3250 | 2800 | 2600 | 2600 | 2050 | 1950 | 2150 | 2500 |
 | 6:20 | — | — | 6:20 | — | — | 6:22 | — | — | 6:24 | — | — | 6:24 | — | — | 6:26 | — | — |
 | — | 7:55 | — | — | 7:53 | — | — | 7:52 | — | — | 7:50 | — | — | 7:47 | — | — | 7:45 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Some drizzle, heaviest during Sat morning. Warm (max 22°C on Mon afternoon, min 10°C on Sat night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Heavy rain (total 33mm), heaviest during Wed night. Warm (max 20°C on Tue afternoon, min 9°C on Wed night). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. To see the weather forecasts for the other elevations, use the tab navigation above the table. For a wider overview of the weather, consult the Weather Map of Washington.
| Weather Station | Temp. | Weather | Wind | Gusts | Cloud / Visibility |
|---|---|---|---|---|---|
 | |||||
Bellingham Airport | | ||||
Abbotsford Airport | |
* NOTE: not all weather observatories update at the same frequency which is the reason why some locations may show data from stations that are further away than known closer ones.